Which of the Following Statements About the Relationship Between Hosts

question 13

Multiple Choice

Which of the following statements about the relationship between hosts and microbes is true?

• A) an opportunistic pathogen has a relatively low infectious dose
• B) infection always leads to symptoms
• C) some organisms can be pathogens and commensals
• D) endogenous infections are caused by microbes that are endemic to environment

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Definitions:

Leydig Cells

Cells located within the testes that produce testosterone in response to luteinizing hormone.

Androgens

Androgens are a group of steroid hormones that play a key role in male traits and reproductive activity, present in both males and females.

Testes

The male reproductive glands where sperm and male sex hormones (such as testosterone) are produced.

Cryptorchidism

A condition where one or both of the testes fail to descend from the abdomen into the scrotum before birth.